User:Lorenza Sforza/sandbox

A tube house (nhà ống) is a narrow rectangular domestic residence, usually 4 m wide, but are often three times that in depth and at least 3 floors high. It is one of the most popular styles of house in Vietnam, dominating the streets of major cities such as Hà Nội or Hồ Chí Minh City.

History
The origins of the architectural form and development of the tube house are disputed,